Process and apparatus for removal of trash deposits on open-end spinning machine

Abstract

A method and apparatus for removing trash and the like from an elongated collection chamber provided on an open-end spinning apparatus. The trash, after separation from the fibrous material, is deposited in the collection chamber. A conveyor belt running through the collection chamber removes the large, coarse trash particles therefrom. A pneumatically intermittently operated collecting device removes the finer trash particles from the collection chamber without adversely affecting the separation operation wherein the trash is initially separated from the fibrous material. In one particular embodiment, a stripper cooperates with the conveyor belt that is used for removing the coarse trash particles for successively positioning a stream of air through the collecting chamber for removing the finer trash particles therefrom. A mechanical stripper is utilized with the stream of air for removing the fine trash particles from the walls of the chamber.

What is claimed is: 
     
       1. An apparatus for removing trash containing both coarse and fine particles from an open-end spinning machine after said trash has been separated from fibrous material and deposited in said collection chamber, said collection chamber being positioned below a releasing roll forming part of said open-end spinning machine, said apparatus comprising: a conveyor belt traveling through said collection chamber removing predominently the coarser particles of said trash;   means defining a trash separating opening providing communication between said releasing roll and said collection chamber through which said trash separated from said fibrous material passes into said collection chamber after separation,   a fiber air stream flowing through said trash separating opening to said spinning machine, and   means for successively moving a stream of air along the length of said chamber for withdrawing predominantly the smaller particles of said trash from said collection chamber without adversely affecting said spinning operation.   
     
     
       2. The apparatus as set forth in claim 1 wherein said means for successively moving a stream of air along the length of said chamber comprises: an air channel carried in said collection chamber;   means for applying reduced pressure to said air channel;   means defining an aperature provided in said conveyor belt providing communication between said air channel and said chamber so that as said conveyor travels through said collection chamber an air stream flowing through said aperture is successively moved along the length of said chamber withdrawing the predominently smaller particles of said trash from said collection chamber.   
     
     
       3. The apparatus as set forth in claim 1 wherein said means for successively moving a stream of air along the length of said chamber comprises: an intermittently controlled suction nozzle which is controlled in dependance of the movement of said conveyor belt along said collection chamber.   
     
     
       4. The apparatus as set forth in claim 1 further comprising: a stripper means operably associated with said means for successively moving said stream of air for dislodging trash in said collection chamber for removal by said stream of air.   
     
     
       5. The apparatus as set forth in claim 4 further comprising: said stripper means including a flexible member for dislodging said trash in said collection chamber.   
     
     
       6. The apparatus as set forth in claim 4 further comprising: means for moving said stripper means with said stream of air along the length of said collection chamber;   said stripper including a pair of spaced flexible members, and said movable air stream being carried between said spaced flexible members.   
     
     
       7. The apparatus as set forth in claim 4 further comprising: means for selectively moving said conveyor belt in opposite directions along the length of said collection chamber.   
     
     
       8. The apparatus set forth in claim 7 further comprising: means for mounting said stripper means on said conveyor belt for movement therewith; and   switching means for selectively reversing the direction of movement of said conveyor belt and said stripper so that said conveyor belt and said stripper move back and forth through said collection chamber.   
     
     
       9. An apparatus for removing trash and the like collected in a collection chamber on an open-end spinning machine after said trash has been separated from fibrous material being fed to a spinning chamber of said open-end spinning machine, said apparatus comprising: means defining a trash separating opening providing communication between said releasing roll and said collection chamber through which said trash separated from said fibrous material passes into said collection chamber after separation,   a fiber air stream flowing through said trash separating opening to said spinning machine,   a conveyor belt traveling through said collection chamber receiving said trash being deposited therein and removing predominently the coarser particles of trash from said chamber;   an air channel carried adjacent said conveyor and extending along said collection chamber;   means for applying a reduced atmospheric pressure to said air channel; and   means defining an opening carried in said conveyor belt providing communication between said air channel and said chamber through which a stream of air is sucked withdrawing predominantly the smaller particles of said trash from said collection chamber with out adversely affecting said spinning operation.   
     
     
       10. The apparatus as set forth in claim 9 further comprising: an elongated slot carried in said air channel adjacent said opening in said conveyor belt;   means for moving said conveyor belt along said air channel so that said air stream flowing through said opening in said conveyor belt and said elongated slot travels with said conveyor belt along said collection chamber.